the electronic configuration of an elements is 2,8,7 what is the atomic numbers of this element? to which of the following elements is the N7, F9, P15, AR18
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N(7) F(9) P(15) Ar(18) (a) The number of electrons present in an atom = 2+8+7 = 17. Therefore, the atomic number of this element is 17. Element is chlorine.
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Answer:
The element is chlorine (cl).
the atomic number is 17
Explanation:
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